MESOSCALE DISCUSSION 1043
   NWS STORM PREDICTION CENTER NORMAN OK
   0523 PM CDT SUN JUN 20 2010
   
   AREAS AFFECTED...NERN CO/ERN WY/NEB PANHANDLE/WRN SD/SERN MT
   
   CONCERNING...TORNADO WATCH 358...
   
   VALID 202223Z - 202330Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 358 CONTINUES.
   
   THREAT OF SUPERCELLS PRODUCING LARGE HAIL...DMGG WINDS...AND PERHAPS
   TORNADOES PERSISTS FOR WW358. 
   
   CONVECTION APPEARS TO HAVE INITIATED IN WRN WY IN ADVANCE OF A WEAK
   VORT MAX EVIDENT ON WV IMAGERY THAT TRAVERSED THROUGH NERN UT...S
   CNTRL WY...AND IS NOW OVER SERN WY. ALTHOUGH NO NOTABLE WAVE APPEARS
   TO THE S...DARKENING ON WV IMAGERY APPEARS TO INDICATE LEADING EDGE
   OF FAVORABLE FORCING FOR ASCENT. MODIFIED 12Z SOUNDING AT DENVER
   CO...AND 18Z SOUNDING AT RAPID CITY SD WITH CURRENT CONDITIONS SHOWS
   LITTLE CONVECTIVE INHIBITION REMAINS ACROSS AREAS TO THE N...WHILE
   CINH IS A BIT STRONGER TO THE S. CINH SHOULD GRADUALLY ERODE THIS
   EVENING WITH AN HOUR OR TWO OF HEATING AND WEAK FORCING. AREA VAD
   WIND PROFILE DATA REFLECTS FAVORABLE VEERING WITH HEIGHT THAT WILL
   CONTINUE TO SUPPORT ISOLATED SUPERCELLS CAPABLE OF LARGE HAIL. AS
   STORMS BECOME SURFACE BASED...THE THREAT FOR DMGG WINDS AND
   TORNADOES WILL BECOME MORE LIKELY WITH TIME.
   
   ..HURLBUT.. 06/20/2010
   
   
   ATTN...WFO...BIS...UNR...GLD...BOU...CYS...BYZ...RIW...
   
   LAT...LON   39230271 39110558 46380706 46350365 39230271